The English concertina is a free-reed musical instrument, similar to an accordion, that is played by expanding and contracting a bellows while pressing buttons. It has a hexagonal shape and typically features a range of 30 to 40 buttons, which produce different notes. The instrument is known for its bright, clear sound and is often used in folk music. Developed in the 19th century, the English concertina is particularly popular in traditional British music and is associated with various styles, including Irish and Scottish folk. It is played by musicians of all skill levels and can be found in both solo and ensemble settings.